Date sent: Sat, 24 Apr 1999 21:42:07 +1000 From: Colin Dowd Send reply to: BJ40@usa.net To: "w.j.markerink@a1.nl" Subject: Nitrous Oxide (N2O) Hi Willem, I've been looking up some info on Nitrous oxide and so far this is what I've found. Take note that this relates directly to the use of Nitrous oxide on PETROL ENGINES but I included it as it gives some insight into the process of how Nitrous Oxide works . Nitrous Oxide (N2O) {Quick history} Use on PETROL ENGINES The use of Nitrous Oxide for a engine power boost dates back to the Second Word War when it was used in many British and German aircraft as a means of maintaining power output with an increase in altitude.However,it was not until drag racing bacame highly competitive in the USA that N2O injection systems began to be experimented with by a few competitors hoping to gain an edge over the opposition.In the last few years N2O systems have been widely used in the States,but very little in Europe. Nitrous Oxide is strictly not a 'fuel',as an engine will not actually run on nitrous oxide alone,since it will not burn on it's own without the additional 'real' fuel. Nitrous Oxide seperates into it's components of Nitrogen and Oxygen when heated to approximately 572 Degrees Farenheit,and the liberated oxygen will then burn with the 'real' fuel to produce more power.At the same time (Because of the high latent heat of evaperation of the liquid N2O),the charge temperature is lowered,thus providing a substantial intercooling effect. An important point from the cooling aspect is that,whilst this process is in progress,the temperature of the substance stays the same,-129 Degrees Farenheit in this case.So it can be seen the intercooling effect is considerable. N2O can be injected as a gas to combine with fuel as an oxygen-enriching agent,but it loses its cooling effect by so doing,in contrast to its injection as a liquid. It should be remembered,too,that because of it's low boiling point at -129 Degrees Farenheit,in addition to it's latent heat vapourisation cooling effect,heat will be absorbed as it mixes with the inlet charge at a much higher temperature in the cylinder. N2O can be injected either before or after the CARBURETTER but,if it is allowed to vapourise before it enters the cylinder ,although it will considerably lower the inlet chargetempreture,the increased quantity of oxygen thus released will cause a very lean Air/Fuel ratio with a strong possability of overheating.This is why all current N2O injection systems add a cerefully metered amount of fuel with the N2O to avoid a lean air-to -fuel situation. With exhaustive testing,it has been determined that between 4.5-5.0 lb/Min of pressurised N2O for a 100 BHP increase is the optimum figure and correspondingly 2.2-2.5 lb/Min will give a 50 BHP increase,the percentage of power being almost linear,and being largely limited by the strength of the engine. Other tests have demonstrated that N2O increases the knock (or detonation) limit of an engine and that the spark timing can be retarded as the percentage of N2O is increased. Also I've done a quick search for anyone that has experience with fitting Nitrous Oxide to Diesel engines and you might like to try out the following links, http://www.nosnitrous.com./ http://www.teamdiesel.com/ I'm also going to contact a engine specialist that has fitted nitrous oxide to turbo diesel engines inn off shore racing boats.I'll keep you posted on the results. Regards, Colin Dowd Queensland Australia 1979 BJ40 3.0 Litre ,Extractors,PTO Winch,New paint Check out the sneak peek photo :-)) Mailto:bj40@usa.net Date sent: Mon, 12 Apr 1999 08:03:12 -0700 From: Aarons family <52m37@alaska.net> Organization: mpfc To: dtlc@helios.net Subject: Re: [DTLC] (fwd) Re: Q. Does nitrous work on diesels? Send reply to: dtlc@helios.net Willem-Jan Markerink wrote: > > Path: > news.a1.nl!news-sender.satin.net!nntp.primenet.com!newsxfer.visi.net!sunqbc.ri > q.qc.ca!News.Dal.Ca!sapphire.mtt.net!not-for-mail From: sbest@TAKEOUTglinx.com > (sbest) Newsgroups: rec.autos.4x4 Subject: Re: Q. Does nitrous work on > diesels? Message-ID: <37103d99.1131927655@news.glinx.com> References: > <371104ec@grissom.powerup.com.au> X-Newsreader: Forte Free Agent 1.11/32.235 > Lines: 28 Date: Sun, 11 Apr 1999 06:20:10 GMT NNTP-Posting-Host: 142.176.49.9 > X-Trace: sapphire.mtt.net 923869546 142.176.49.9 (Sun, 11 Apr 1999 19:25:46 > ADT) NNTP-Posting-Date: Sun, 11 Apr 1999 19:25:46 ADT Organization: Business > Internet Xref: news.a1.nl rec.autos.4x4:116838 Status: N > > On Mon, 12 Apr 1999 06:30:23 +1000, "Mangey" > wrote: > > > Any one know? One of my mates with a turbo diesel was wondering. > >-- > >Pat, > > > >Keeper of the Mangeysaurus Rex, > >http://www.powerup.com.au/~mangey/ > >Brisbane, Australia, > > Stopped in to have a look at your website Pat. Looks great! > > Yes it will Pat, but it is best with a direct injection diesel. > Appearantly it speeds up combustion too fast in a prechamber diesel and > with ruin it. It is used in competition tractor pulls here. > > Some other stuff I have heard about but can't get too much hard info on is > propane (or other fuel) augmentation as a power boost. It is injected down the > intake to increase economy, boost power, quiet the engine and reduce emissions > when used in various percentages. > > Anyone know about this stuff? > > Steve Best, Nova Scotia, > 4x4 van website: > http://www.glinx.com/users/sbest > > -- > Bye, > > Willem-Jan Markerink > > The desire to understand > is sometimes far less intelligent than > the inability to understand > > > [note: 'a-one' & 'en-el'!] Nitrous? Why?!?! It seems like a prescription for a hole in a piston when combined with fuel enrichment. The purpose of N2O injection is to supply oxidizer. Petrol engines run richer than stoichiometric (newer fuel injected ones only slightly so, but still so). Diesels always run leaner than stoichoimetric (>14.5:1 air:fuel ratio). If they are richer, little to no power is added, EGTs rise steeply, and black smoke is produced. The time proven way of smoothly and automatically supplying more oxygen to a diesel is of course a turbo. Some extra O2 without changing the fuel setting or load actually causes EGTs to drop (that's good!). When you "step on it" with a turbo the extra fuel causes the exhaust to get hotter, which makes the turbo spin faster, which supplies more air. This occurs in about 2-3 seconds ("turbo lag"). Why mess around with nitrous cylinders and attempt to jury-rig a fuel enrichment system when turbocharging technology is so well developed? And for Landcruisers there are many well-engineered complete kits to choose from. The kit mfgs. say that if load is held the same, EGT and fuel economy actually improves slightly. And I believe it. Both on a theoretical basis and on the basis of 1st hand experience. Install an EGT in your manifold now, run for a couple of months, then put a turbo kit on. I did. Charlie